G Reddy Dump Valve Connection Pipe Pre-installed flange included Made from aluminium Diameter 2.5" (64 mm)For an easy and quick installation of your G Reddy dump valve !Dump Valve Connection Pipe for Greddy Dump Valve Made from aluminium, this connection pipe is designed to fit into your air flow circuit (piping). With a diameter of 2.5" (64 mm), it comes with a flange that allows you to easily install a G Reddy dump valve.